952.5% is the change from 80 to 842
Calculation steps:
[( 842 - 80 ) ÷ 80] x 100 = 952.5%
Formula
Percentage change = [(842 - 80) / 80] x 100
Subtract the new number by the original number
842 - 80 = 762
762 ÷ 80 = 9.525
9.525 x 100 = 952.5%
Example